NTSB CAROL · Event
Event SEA00LA114
Registry · N6775B
FAA Aircraft Registry record.
Make / Model
PIPER PA-18A 150
Year of manufacture
1956 · 44 years old at event
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19660520
ADS-B equipped
Yes — Mode-S A8F8C2
Registrant of record
OCEAN AERIAL ADS INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot-in-command's failure to maintain directional control during landing roll.
Factual narrative
On June 25, 2000, a Piper PA-18A-150, N6775B, registered to Seattle Glider Council, Inc. of Ephrata, Washington, was substantially damaged in a loss of control and subsequent main landing gear collapse on landing rollout at Ephrata, Washington. The commercial pilot-in-command and a private pilot aboard the aircraft (a Canadian citizen who held a Canadian glider pilot license and a Canadian private pilot license for single-engine land airplanes, but whose U.S. private pilot certificate carried only a glider rating) were not injured in the accident. Visual meteorological conditions prevailed and no flight plan was filed for the 14 CFR 91 local instructional flight from Ephrata. The accident airplane was used as a glider tow plane by the Seattle Glider Council. The pilot-in-command reported that on the accident flight, he was getting checked out on the aircraft by the private pilot, whom the pilot-in-command reported was the glider club's "check out pilot". He stated: ...The approach and landing went smoothly. About 100 feet into the roll-out the left wing lifted, so I applied left aileron to bring it down. With that the aircraft began to veer to the left so I corrected with a small amount of right rudder. Then the aircraft began to go right so I applied some left rudder. That did not correct the problem so I applied more left rudder, until it was full left rudder still with no response. I moved for the left brake. By this time the aircraft was close to 90 degrees turned on the runway. At that time [the private pilot] applied a large amount of power and the airplane whipped to the right, the left gear broke and the left wing hit the ground. The private pilot (the club "check out" pilot) reported: ...I asked [the pilot-in-command] to fly a pattern for runway 02 and using a steep approach as we normally use while towing gliders because of the two hundred foot tow rope in order to keep the tow rope a safe distance from the threshold. The landing was smooth but while rolling straight ahead at a decreased speed, the left wing came up and the airplane started to turn slightly to the right. I applied power to take over the controls but the rate of turn to the right increased and [I] realized that it would not be possible to recover. At that time I then retarded the throttle and the airplane came to a stop. The left wing was broken and the left wing tip was on the ground.... The operator's accident report to the NTSB indicated that no mechanical malfunction or failure was involved in the accident. The landing on which the accident occurred was on runway 2, a 6,700- by 150-foot asphalt runway equipped with visual approach slope indicator (VASI) lights. Winds were reported from 020 degrees true at 7 knots in the 0850 Ephrata METAR observation, and from 070 degrees true at 7 knots in the 0950 Ephrata METAR observation. The pilot-in-command, a commercial pilot, was getting checked out on a glider club tow plane by the glider club's 'check out pilot', a Canadian citizen with a Canadian glider pilot license and Canadian private pilot certificate valid for single-engine land airplanes (but whose U.S. private pilot certificate carried only a glider rating.) The pilots reported that about 100 feet into the landing roll from a steep approach (which the 'check out' pilot reported was a typical tow plane approach profile due to tow rope considerations), which began smoothly, the plane's left wing lifted and the plane began to veer to the right. The pilot-in-command reported that he unsuccessfully attempted to correct the motion with up to full left rudder, and both pilots reported that the 'check out' pilot applied power, but the plane continued up to about 90 degrees to the right of the runway heading, the plane's left gear broke, and the airplane's left wing contacted the ground. The operator's NTSB accident report indicated that no mechanical malfunction or failure was involved in the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2000_SEA00LA114.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
Browse the full corpus — academia portal ↗